Concave filiet weld
[机] 凹面堆角熔接
🧩 词语组成解析
concave
['kɔn'keiv]
n. 凹面，成凹形;
adj. 凹的;
vt. 使成凹形;
weld
[wɛld]
vt.& vi. 焊接;使紧密结合;
n. 焊接点;黄色植物染料;
🗣️ 情景例句
but just right for us.
但正好够我们住。
Ouch! I fell down and cut my knee!
好痛呦！我跌倒割伤了膝盖！
he has just bought a new house in the city,
他刚在城里买下一所新房子，